Doherty is an Anglicized surname of Irish origin, derived from the Gaelic Ó Dochartaigh, meaning "descendant of Dochartach". The personal name Dochartach is a byname meaning "obstructive" or "hurtful," likely indicating a person of stubborn or formidable character. The name is historically associated with the Uí Néill dynasty in County Donegal, where the O'Doherty clan was a powerful sept.Historical ContextThe O'Doherty family ruled the territory of Inishowen in Donegal until the early 17th century. The most famous bearer is Sir Cahir O'Doherty (1587–1608), the last Gaelic lord of Inishowen, who rebelled against English rule during the Plantation of Ulster. His death and the destruction of the clan led to the dispersal of the name across Ireland and later to the Irish diaspora.Variants and DistributionCommon Anglicized forms include Daugherty and Dougherty. The original Gaelic form is Ó Dochartaigh, meaning "grandson/descendant of Dochartach." A less common variant is O'Doherty, often used historically alongside the place name Doherty in Ontario, Canada.Notable BearersDenis Doherty (1860–1911): Irish-American naval architect who designed warships for the U.S. Navy.Peter Doherty (born 1940): Australian Nobel Prize–winning immunologist.Shannen Doherty (1971–2024): American actress, known for Beverly Hills, 90210.Key FactsMeaning: Descendant of Dochartach ('obstructive' in Irish)Origin: Irish (Ó Dochartaigh)Type: SurnameRegion: County Donegal, Ireland